1,721,168 research outputs found
Adenosine-stimulated adrenal steroidogenesis involves the adenosine A2A and A2B receptors and the Janus kinase 2-mitogen-activated protein kinase kinase-extracellular signal-regulated kinase signaling pathway.
No full textUnplanned readmission within the most recent postoperative year of heart transplant patients in Taiwan
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Effects of PPARgamma agonists on cell survival and focal adhesions in a Chinese Thyroid carcinoma cell line
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An acidic extracellular pH disrupts adherens junctions in HepG2 cells by Src kinases-dependent modification of E-cadherin.
No full textVariations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Coding mode determination using fuzzy reasoning in H.264 motion estimation
No full text[[abstract]]Exhaustively searching over all possible partition modes using rate distortion comparison in H.264/AVC motion estimation to choose the best coding mode for each macroblock has much better coding efficiency than other existing standards. However, exhaustive searching has high computational complexity. This study analyses the statistics of coding mode distribution to determine the need of motion estimation for a current macroblock according to its previous corresponding macroblock information. A fast algorithm based on fuzzy reasoning with temporal and texture correlation of coding block information is proposed to reduce the computation time effectively. The fuzzy reasoning technique is used to determine the most appropriate mode quickly for motion estimation in H.264/AVC video coding. Simulation results show that the proposed algorithm has an encoding time 55.7-70% less than that of taken by searching for all coding modes exhaustively, while retaining the almost same coded picture quality and bit rate.[[note]]SC
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